Results 11 to 20 of about 10,821 (234)

Semi-empirical design and synthesis of novel 4-hydroxy-6-sulphonaphthyl azohydroxynaphthalenes with predominant hydrazone form

Scientific African
Due to their enhanced photochromic effects, hydrazone forms of tautomeric azo compounds are commercially preferred as photoreceptors and binary switches.
Olusegun E. Thomas, Olajire A. Adegoke
doaj   +2 more sources

Photochemical and electrochemical studies on lanthanide complexes of 6-(hydroxymethyl)pyridine- 2-carboxaldehyde[2- methyl-pyrimidine-4,6-diyl] bis-hydrazone

Revista Colombiana de Química, 2014
Herein we report the synthesis of the 6-(hydroxymethyl)pyridine-2- carboxaldehyde[2-methyl-pyrimidine- 4,6-diyl]bis-hydrazone by a condensation reaction between 6-(hydroxymethyl) picolinaldehyde with 4,6-(bis-hydrazino)-2- methylpyrimidine.
María Alejandra Fernandez, Juan Camilo Barona, Dorian Polo-Cerón, Manuel N. Chaur   +3 more
doaj   +2 more sources

Hydrazone‐Type Ligands for Asymmetric Catalysis

ChemistryEurope
Hydrazone‐based ligands have emerged as a versatile class of chiral ligands for asymmetric catalysis. Their structural modularity, tunable electronic properties, and diverse coordination modes make them attractive alternatives to more established N‐based
Esteban Matador, Saúl Alberca, Rosario Fernández, David Monge, José M. Lassaletta   +4 more
doaj   +2 more sources

Vinylogous Hydrazone Strategy for the Organocatalytic Alkylation of Heteroaromatic Derivatives [PDF]

, 2021
A new umpolung approach for the asymmetric FriedelCrafts-type alkylation of electron-poor heteroaromatic systems has been developed. It is based on the vinylogous reactivity of hydrazones derived from heteroaromatic aldehydes.
Beata, Łukasik, Sebastian, Frankowski, Lukasz, Albrecht, Justyna, Kowalska   +3 more
core   +1 more source

Asymmetric [4+2]-cycloaddition of Anthracene Derivatives via Hydrazone Activation [PDF]

, 2023
Enantio- and diastereoselective dearomative [4+2]-cycloaddition reaction between N,N-dimethylhydrazone derived from 9-anthracenecarbaldehyde and α,β-unsaturated aldehydes is reported.
Jakub, Ossowski, Łukasz, Albrecht, Beata, Łukasik, Sebastian, Frankowski   +3 more
core   +1 more source

Nickel-Catalyzed Cross-Coupling Methylation of Aryl and Heteroaryl Electrophiles via Hydrazone Umpolung [PDF]

, 2023
Methyl groups play a vital role in pharmaceutical substrates, where their installation onto aryl and heteroaryl moieties can often lead to enhanced drug-target interactions.
Daliah, Farajat, Yiram, Kim, Chao-Jun, Li, Anastasiia, Afanasenko, Juan D., Lasso, Joaquín, Barroso-Flores, Durbis J., Castillo-Pazos, Léa, Philippe   +7 more
core   +1 more source

DNA Functionality with Photoswitchable Hydrazone Cytidine [PDF]

, 2020
A new family of hydrazone modified cytidine phosphoramidite building block was synthesized and incorporated into DNA oligonucleotides to construct photoswitchable DNA strands.
Ya Ying, Zheng, Song, Mao, Zhihua, Chang, Jia, Sheng, Alexander, Shekhtman   +4 more
core   +2 more sources

Catalysis of Hydrazone and Oxime Peptide Ligation by Arginine [PDF]

, 2020
Hydrazone and oxime peptide ligations are catalyzed by arginine. The catalysis is assisted intramolecularly by the side-chain guanidinium group. Hydrazone ligation in the presence of arginine proceeds efficiently in phosphate buffer at neutral pH but is ...
Jérôme, Vicogne, Nathalie, Ollivier, Hervé, Drobecq, Benoît, Snella, Vangelis, Agouridas, Oleg, Melnyk, Rémi, Desmet   +6 more
core   +2 more sources

Effect of the alkyl linker length on the photoisomerization of hydrazone switches on metal surfaces [PDF]

, 2022
A series of bistable hydrazone switches containing alkyl thiolate linkers of various lengths (Cn HAT, n = 3, 8, 10, and 11) were synthesized. We explore the length effect of the carbon chain on the photoisomerization of hydrazone switches using UV-vis ...
Ivan, Aprahamian, Liqing, Zheng, Renato, Zenobi, Jinggang , Lan, Sirun, Yang, Vladimir , V. Rybkin, Sven , Krähenbühl   +6 more
core   +2 more sources

Discovery of potent 4-aminoquinoline hydrazone inhibitors of NRH:quinoneoxidoreductase-2 (NQO2) [PDF]

, 2019
(NRH):quinone oxidoreductase 2 (NQO2) is associated with various processes involved in cancer initiation and progression probably via the production of ROS during quinone metabolism.
Hussein, Buthaina, Stratford, Ian J., Kadirvel, Manikandan, Halbert, Gavin, Freeman, Sally, Magwaza, Rachael N., Ikhmais, Balqis, Bryce, Richard A.   +7 more
core   +3 more sources